this post was submitted on 11 Feb 2025
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‘If 1.5m Germans have them there must be something in it’: how balcony solar is taking off (www.theguardian.com)
submitted 3 days ago by [email protected] to c/technology
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[–] [email protected] 3 points 2 days ago (1 children)

Personally, a remnant of that. Being able to use standard lead acid batteries is a perk, but primarily I find that that voltage range of < 20-50>vdc in terms of equipment is in those 12v increments too. With the powedelivery (PD) extended power range (epr) going up to 48v right now, and the fixed voltages in that spec being multiples of 12 again matching the industry it is now.

With adjustable voltage supplies (AVS) it might matter less (because it can increment in 100mv instead of a couple fixed voltages) but I haven't messed with that yet myself

[–] [email protected] 2 points 2 days ago (1 children)

The PC industry has been trying to get rid of those 3.3V and 5V rails for over a decade now, trying to get everyone on board with 12V only. The only hold-out in a modern PC should be SATA, at 5V, the mainboard already doesn't care and GPUs definitely don't. Also no -12V any more. Any year now, not that SATA will die that quickly but the mainboard knows how many SATA connectors it has and can provide sufficient 5V to power your disks.

[–] [email protected] 1 points 2 days ago

PD's default comms voltage is 5v at the moment too.

I'm for moving up the default voltage, but that is naive take for me. It just sounds right I have no idea the actual pros and cons on that low of level if that messes with components and what insulations to expect etc